Based on brief review and comparison between the traditional and the modern auto-focus methods,the theory and the key points of the auto-focus method based on image processing are put forward.It is figured out that the image-clarity evaluation and searching algorithm are key technologies in the study of auto-focus method based on image processing.And the approaches of these aspects are described in detail.
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尤玉虎,刘通,刘佳文.基于图像处理的自动对焦技术综述[J].激光与红外,2013,43(2):132~136 YOU Yu-hu, LIU Tong, LIU Jia-wen. Survey of the auto-focus methods based on image processing[J]. LASER & INFRARED,2013,43(2):132~136